diff --git a/requirements.txt b/requirements.txt
index f65e319..5f41444 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ keyrings.alt==3.0
 lazy-object-proxy==1.3.1
 # LibAppArmor==2.12
 linecache2==1.0.0
-lxml==4.1.0
+lxml==4.9.1
 Mako==1.0.7
 markdown2==2.3.5
 MarkupSafe==1.0